Search Results for: polar
Polar body
Definition noun, plural: polar bodies The cell that results from the asymmetric division of an oocyte. Supplement In animals... Read More
Phospholipid
What is a phospholipid? Phospholipids are a subgroup of lipids. Other major types of lipids are fatty acids, sphingolipids,... Read More
Polar compound
Definition noun, plural: polar compounds A compound made up of molecules joined by assymetrical polar... Read More
Polar molecule
Definition noun, plural: polar molecules A molecule with a net dipole as a result of the opposing charges (i.e. having... Read More
Amphipathic
Amphipathic Definition Amphipathic is a word used to describe a chemical compound containing both polar (water-soluble) and... Read More
Chemical Composition of the Body
In order to fully understand the mechanisms of human physiology, it is important to have an understanding of the chemical... Read More
Hydrophilic
Hydrophilic Definition What does a hydrophile (or hydrophilic molecule) mean? If a molecule is “water-loving”, it is... Read More
Polar solvents
polar solvents Solvent's that exhibit polar forces on solutes, due to high dipole moment, wide separation of charges, or... Read More
Hydrophobic
Hydrophobic Definition The fear of mixing or reacting with water under a given set of reaction parameters is often referred... Read More
Parthenogenesis
To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More
Nonpolar compound
Definition noun, plural: nonpolar compounds A compound comprised of molecules linked through chemical bonds arranged in such... Read More
Hydrogen bond
Definition noun plural: hydrogen bonds A type of chemical bond that is formed when the slightly positive hydrogen atom of... Read More
Movement of Molecules Across Cell Membranes
Diffusion Diffusion is essentially the movement of molecules from a region of higher concentration to a region of lower... Read More
Cell membrane
Cell Membrane Definition Just like any non-living body possesses a plastic or paper packaging material that keeps the... Read More
Plasma membrane
Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More
Characteristic
Characteristics Definition We can define characteristics as qualities or features that describe the distinctive nature or... Read More
Cell Structure
The interior of human cells is divided into the nucleus and the cytoplasm. The nucleus is a spherical or oval-shaped... Read More
Multipolar
multipolar (Science: biology) Having many poles; applied especially to those ganglionic nerve cells which have several... Read More
Polarization
Definition noun (general) The condition of polarity (biology) The process or act of producing positive and negative... Read More
Polypeptide
Polypeptide Definition Biology What are polypeptides? A polypeptide is defined as a polymer of amino acids joined together... Read More
Cytokinesis
The cell cycle of eukaryotes is a cyclical series of biological events that certain asexual cells go through. The cell cycle... Read More
Human Reproduction
Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More
